The first three leds getting the correct color, but why is my callback function my_callback not beeing called?

 

#!/usr/bin/env python
# -*- coding: utf-8 -*-

HOST = "localhost"
PORT = 4223
UID = "Lc7" # Change XYZ to the UID of your LED Strip Bricklet 2.0
LED_AMOUNT = 493
CLEAR_MATRIX = [0,0,0] * LED_AMOUNT

from tinkerforge.ip_connection import IPConnection
from tinkerforge.bricklet_led_strip_v2 import BrickletLEDStripV2

def clearAll():
	ls.set_led_values(0, CLEAR_MATRIX)

def remove(index):
	ls.set_led_values(index, [0,0,0])

def set(index, r,g,b):
	ls.set_led_values(index, [r,g,b])

def my_callback():
	print('my callback called')

if __name__ == "__main__":
    ipcon = IPConnection()
    ls = BrickletLEDStripV2(UID, ipcon)
    ipcon.connect(HOST, PORT) 

    ls.set_frame_started_callback_configuration(True)
    ls.set_channel_mapping(BrickletLEDStripV2.CHANNEL_MAPPING_RGB)
    ls.set_frame_duration(100)
    ls.register_callback('my_callback', my_callback)
    ls.set_led_values(0, [255, 0, 0, 0, 255, 0, 0, 0, 255])

    input("Press key to exit\n")

    ipcon.disconnect()

 

There is not my_callback callback, that's why its not called. There is only the CALLBACK_FRAME_STARTED callback.

def cb_frame_started(length):
    print('cb_frame_started', length)

ls.register_callback(BrickletLEDStripV2.CALLBACK_FRAME_STARTED, cb_frame_started)